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put db/disk accesses into background thread? #109

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put db/disk accesses into background thread? #109

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7cdcb70
put db access to background
yulin2 Oct 25, 2014
1821d57
put db access to background thread.
yulin2 Oct 25, 2014
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54 changes: 43 additions & 11 deletions source/src/cn/eoe/app/ui/DetailsActivity.java
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,8 @@ public class DetailsActivity extends BaseActivity implements OnClickListener {
private DetailDB mDetailDB;
private String mKey;
private int mDBID = -1;

private AsyncTask<Void, Void, Void> initAppraiseTask;

@Override
protected void onCreate(Bundle savedInstanceState) {
Expand All @@ -85,7 +87,13 @@ protected void onCreate(Bundle savedInstanceState) {
mKey = sharePre.getString(UserLoginUidActivity.KEY, "");
initData();
initControl();
initAppraise();
initAppraiseTask = new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
initAppraise();
return null;
}
}.execute();
}

private void initData() {
Expand Down Expand Up @@ -193,16 +201,32 @@ protected void onPause() {
if (mKey.equals(null) && mKey.equals("")) {
return;
}
if (mDBID == -1 && (IsGood || IsBed || IsCollect)) {
// 添加
mDetailDB.insertSQL(mUrl, mKey, IsGood ? 1 : 0, IsBed ? 1 : 0,
IsCollect ? 1 : 0);
} else if (mDBID != -1) {
// 修改
mDetailDB.updateSQL(mDBID, IsGood ? 1 : 0, IsBed ? 1 : 0,
IsCollect ? 1 : 0);
}
mDetailDB.dbClose();
new AsyncTask<Void, Void, Void>() {
@Override
protected void onPreExecute() {
// synchronize with initAppraiseTask
try {
initAppraiseTask.get();
} catch (Exception e) {
e.printStackTrace();
}
}

@Override
protected Void doInBackground(Void... params) {
if (mDBID == -1 && (IsGood || IsBed || IsCollect)) {
// 添加
mDetailDB.insertSQL(mUrl, mKey, IsGood ? 1 : 0, IsBed ? 1 : 0,
IsCollect ? 1 : 0);
} else if (mDBID != -1) {
// 修改
mDetailDB.updateSQL(mDBID, IsGood ? 1 : 0, IsBed ? 1 : 0,
IsCollect ? 1 : 0);
}
mDetailDB.dbClose();
return null;
}
}.execute();
}

class MyTask extends AsyncTask<String, Integer, String> {
Expand Down Expand Up @@ -277,6 +301,14 @@ public void onClick(View v) {
showLongToast(getResources().getString(R.string.user_login_prompt));
return;
}

// synchronize with initAppraiseTask
try {
initAppraiseTask.get();
} catch (Exception e) {
e.printStackTrace();
}

String url = null;
switch (v.getId()) {
case R.id.rlGood:
Expand Down
32 changes: 21 additions & 11 deletions source/src/cn/eoe/app/utils/ImageUtil.java
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Original file line number Diff line number Diff line change
Expand Up @@ -20,9 +20,11 @@
import android.graphics.BitmapFactory;
import android.graphics.BitmapFactory.Options;
import android.graphics.Rect;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Environment;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.widget.ImageView;
Expand Down Expand Up @@ -116,16 +118,24 @@ public static boolean hasExternalCacheDir() {
private static void setThumbnailImage(ImageView view, String imageUrl,
String cachePath, DBHelper dbHelper, ImageCallback callback,
boolean b) {
Bitmap bitmap = null;
bitmap = ImageUtil.loadThumbnailImage(cachePath, imageUrl, dbHelper,
callback, b);
if (bitmap == null) {// 先查找数据库，再查找本地sd卡,若没有.再从网站加载，若网站上没有图片或错误时返回null
// 设置默认图片
view.setImageResource(Default_Img);
} else {
// 设置本地SD卡缓存图片
view.setImageBitmap(bitmap);
}
new AsyncTask<Void, Void, Bitmap>() {
@Override
protected Bitmap doInBackground(Void... params) {
return ImageUtil.loadThumbnailImage(cachePath, imageUrl, dbHelper,
callback, b);
}

@Override
protected void onPostExecute(Bitmap bitmap) {
if (bitmap == null) {// 先查找数据库，再查找本地sd卡,若没有.再从网站加载，若网站上没有图片或错误时返回null
// 设置默认图片
view.setImageResource(Default_Img);
} else {
// 设置本地SD卡缓存图片
view.setImageBitmap(bitmap);
}
}
}.execute();
}

private static Bitmap getImageFromDB(String imagePath, String imageUrl,
Expand Down Expand Up @@ -297,7 +307,7 @@ public static Bitmap loadThumbnailImage(final String imagePath,
return bitmap;
} else {
// 从网上加载
final Handler handler = new Handler() {
final Handler handler = new Handler(Looper.getMainLooper()) {
@Override
public void handleMessage(Message msg) {
if (msg.obj != null) {
Expand Down